.hidden {
    display: none !important;
}

.preview-container {
    width: 100%;
    min-height: 300px;
    background-color: #f8f9fa;
    border: 1px dashed #ced4da;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.img-preview {
    max-width: 100%;
    max-height: 200px;
    object-fit: contain;
}

.preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #6c757d;
}

.placeholder-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 10px;
}

#previewCanvas {
    max-width: 100%;
    max-height: 256px;
    object-fit: contain;
}

.preset-size, .preset-radius {
    font-size: 0.9rem;
    padding: 0.375rem 0.5rem;
}